Obtained by us respiratory rate data at rest were compared to the results, obtained by L. A. Wallis and I. Maconochie (2006) in relatively small number of untrained children at the age of 8-16 years. The data at both 8 and 16-year-old level largely coincided with each other and the error made only one unit, which could indicate the equal values of respiratory rate in trained and untrained persons.